.stairs {
    position: fixed;
    right: 0px;
    top: 30%;
    width: 100px;
    // height: 100px;
    background: transparent;
    z-index: 3000;
    .ul-z {
        li {
            line-height: 46px;
            text-align: right;
            padding-right: 12px;
            font-size: 12px;
            cursor: pointer;
        }
        .active {
            color: #ca151d;
            transform: translateX(-7px);
            border-bottom: 1px solid #ca151d;
            transition: all 0.5s ease;
        }
    }
}
